When Chris Cox rolls into Cleveland in mid-July with other motorcycle-riding supporters of Donald Trump, he plans to celebrate the billionaire’s coronation as the Republican presidential nominee. “I’m anticipating we’ll be doing a victory dance,” said Cox, 47, a chainsaw artist and founder of Bikers for Trump, thousands of whom he estimates will hit the Ohio city for the July 18-21 Republican National Convention. “But if the Republican Party tries to pull off any backroom deals and ignores the will of the people, our role will change.” Bikers For Trump is part of a diverse array of groups coordinating to hold thousands-strong protests and marches if the real-estate mogul is denied outright victory at the Republican Party’s nominating convention in Cleveland.